AMD Ryzen 9 7940HX vs Intel Core Ultra 7 265K Comparison

The Intel Core Ultra 7 265K and AMD Ryzen 9 7940HX are both high-performance processors that land in the 94th percentile of all CPUs tested, yet they achieve that status through fundamentally different designs. The Intel part is a desktop flagship with 20 cores and 20 threads, while the AMD part is a mobile powerhouse with 16 cores and 32 threads. The benchmark data reveals a clear split: Intel dominates in single-threaded and floating-point workloads, while AMD counters in integer-heavy and compression tasks.

Head-to-Head Benchmarks

The most decisive victory for the Intel Core Ultra 7 265K comes in the Cinebench R23 multi-core test, where it scores 35,850 against AMD's 29,400. That is a 21.9% advantage, a substantial margin that underscores Intel's raw throughput capability despite having 4 fewer threads than the Ryzen 9 7940HX. The gap narrows in single-core performance, but Intel still leads with a score of 2,020 versus 1,807, an 11.8% edge.

The PassMark suite amplifies Intel's strengths in specific computational domains. The floating-point math test shows Intel at 189,629 versus AMD's 121,383, a massive 56.2% lead. Physics simulation results follow a similar pattern, with Intel scoring 3,731 against AMD's 2,297, a 62.4% difference. Prime number generation is even more lopsided; Intel's 491 score is 79.9% higher than AMD's 273. These results indicate that Intel's architecture handles complex mathematical operations and simulation workloads with significantly greater efficiency.

Intel also wins the single-threaded PassMark test by a 25% margin, scoring 4,928 versus 3,942. This advantage carries over to data encryption, where Intel scores 48,246 against AMD's 41,974, a 14.9% lead. Extended instructions show Intel ahead at 54,333 versus 51,029, a 6.5% edge. The PassMark multi-thread test also favors Intel, with 58,594 versus 53,204, a 10.1% advantage.

AMD's wins are fewer but concentrated in areas that matter for specific workloads. The integer math test is AMD's largest victory, scoring 202,883 versus Intel's 143,242, a 29.4% margin. Data compression also goes to AMD, with 693,741 versus 665,554, a 4.1% edge. Random string sorting is a narrow win for AMD, 81,775 versus 79,752, a 2.5% difference. These results suggest that AMD's Zen 4 architecture excels at integer arithmetic and data manipulation tasks.

FAQ

Q: Which processor has the higher multi-core benchmark score?

A: The Intel Core Ultra 7 265K leads in Cinebench R23 multi-core with 35,850, which is 21.9% higher than the AMD Ryzen 9 7940HX's score of 29,400.

Q: How do the single-threaded performances compare?

A: Intel is ahead in both available single-thread tests. It scores 2,020 in Cinebench R23 single-core versus AMD's 1,807, and 4,928 in PassMark single-thread versus AMD's 3,942, representing an 11.8% and 25% advantage, respectively.

Q: In which benchmark does AMD achieve its largest victory?

A: AMD's biggest win is in PassMark integer math, where it scores 202,883 against Intel's 143,242, a 29.4% advantage.

Q: What is the difference in core and thread counts?

A: The Intel Core Ultra 7 265K has 20 cores and 20 threads. The AMD Ryzen 9 7940HX has 16 cores and 32 threads.

Q: Which processor has a higher boost clock speed?

A: The Intel Core Ultra 7 265K has a boost clock of 5.50 GHz, while the AMD Ryzen 9 7940HX boosts to 5.20 GHz.

Q: How do the processors compare in average benchmark score?

A: The Intel Core Ultra 7 265K has an average benchmark score of 70,879, while the AMD Ryzen 9 7940HX averages 69,875. Both sit in the 94th percentile of all CPUs.

Where Each One Wins

The Intel Core Ultra 7 265K is the clear choice for workloads that depend on floating-point arithmetic, physics simulation, and prime number computation. The 56.2% lead in floating-point math and the 62.4% advantage in physics suggest that scientific computing, engineering simulations, and any application relying on complex mathematical models will run substantially faster on Intel. The 79.9% edge in prime number generation also points to strength in cryptography and number-theoretic algorithms. Single-threaded performance is another Intel stronghold, with a 25% lead in PassMark single-thread, making it the better option for lightly threaded applications and games that depend on high clock speeds.

The AMD Ryzen 9 7940HX wins where integer operations and data handling dominate. The 29.4% advantage in integer math makes it suitable for database operations, financial calculations, and general business applications that process large volumes of integer data. Data compression is another AMD strength, with a 4.1% lead, which matters for file archiving, backup solutions, and data transfer workloads. Random string sorting, though a narrow 2.5% win, indicates AMD handles sorting algorithms and text processing efficiently.

For mixed workloads, the PassMark multi-thread test gives Intel a 10.1% advantage, suggesting Intel maintains its lead even in heavily parallel tasks. However, the AMD part's 32 threads versus Intel's 20 may offer better scaling in applications specifically optimized for high thread counts, though the benchmark data shows Intel still wins the multi-thread test.

Specification Differences

The two processors differ significantly in their core configurations. The Intel Core Ultra 7 265K offers 20 cores and 20 threads, while the AMD Ryzen 9 7940HX provides 16 cores and 32 threads. This means AMD has fewer physical cores but more logical threads, relying on simultaneous multithreading to reach its thread count, whereas Intel does not use SMT.

Clock speeds also differ. Intel has a base clock of 3.90 GHz and a boost of 5.50 GHz. AMD runs a base clock of 2.40 GHz and a boost of 5.20 GHz. The power envelope is dramatically different, with Intel rated at 125W TDP and AMD at just 55W TDP, reflecting their desktop versus mobile market segments.

Memory bandwidth specifications show Intel at 102.4 GB/s versus AMD's 83.2 GB/s, both using dual-channel DDR5. The processors also differ in socket compatibility, with Intel using Socket 1851 and AMD using Socket FL1. Both support PCIe Gen 5, but AMD offers 28 lanes versus Intel's 20 lanes.

Architecture Differences

The Intel Core Ultra 7 265K is built on Arrow Lake architecture, fabricated on a 3nm process at TSMC. It contains 17,800 million transistors on a 243 mm² die. The cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3 cache. Intel integrates Arc Xe-LPG Graphics with 64 execution units.

The AMD Ryzen 9 7940HX uses Zen 4 architecture, specifically the Dragon Range codename for mobile. It is manufactured on a 5nm process, also at TSMC, with 13,140 million transistors spread across two 71 mm² dies. Cache configuration includes 64 KB of L1 per core, 1 MB of L2 per core, and a larger 64 MB of L3 cache. AMD integrates Radeon 610M graphics.

Both processors support DDR5 memory and have unlocked multipliers. Intel supports ECC memory, while AMD does not. Intel was released on October 23, 2024, with a launch MSRP of $394, while AMD was released earlier on January 16, 2024. The process node advantage for Intel at 3nm versus AMD's 5nm likely contributes to its higher clock speeds and power efficiency, although AMD's smaller dual-die design allows for a lower 55W TDP suitable for mobile use. The larger L3 cache on AMD, at 64 MB versus 30 MB, may explain its strength in data compression and integer workloads, where larger cache footprints help with data locality.